Gas-engine.



PATENTE) APR. 2s, 1907,

I J. W. LIPPINGOTT.

G-AS ENGINE."

APPLIoATIoN FILED JUNE 5 ...C .mx

i enfin Jene: 'n'. igieirlneeif'if, .ee

' Speciication ofle'ttei's stent.

Applleetiouled June 51 1906 erinl lle. 32912113. 'l

To r/v//k 'iff/wint it 1li/mty e/nmmlzLs. ,e B uit known that li Jenn WQ Lnesoo'in, e tizen et tliellnited States, i'esiding et Little lleeli; in the county et Pulaski and Stel-5e of Ailes-neas, lieve invented Certain nonT end useful lmjgnovenients in (lfeedingnles,A

provided with' peeking' rings (1;

With these genei'el considerations in View tlie object of the pi'esent invention is te provide ineens, wileieby tlie eylindei' of :i ges engine using any el tlie explosive mixtures the nietei' powei, muy be more peiieetly exhausted ei tlie spent or lnunt l'nel.` pri o1' to "lie entenee of enetliei eliinge, thereby increasing, the eil'eotiveness of the engine.

` 'lllie invention consists of the pe-its sind combinations Wliieli will lie liereinefter deA scribed ,end definitely' pointed out in the eleiins. n

"filedes-Wing represents u. longitudinal seetion end part elevetlon ol e. ges engin e einbody/ing one torni el the piesent invention, the usuel'irenie'worli or lied being omitted vlei1 eleeiness olillilsti'etion.

Thek ejylindel1 i/Qniziy generally .of 'any usuel of desired eliel'eeter, exe-dit es hei-ein` .eltei1noted;l and, il '(lesiied, e piovided- With tlie usuel Water cooling jacket A. 'lle-v eiploeeting within ltlie cylinde'iI A is tl'ie mein piston B, eonnee'ted by .rod C to` the usuel crank s hit l), the plston being prefei'elily lllitlfiintlie eylinde A, et the end tliei'eol", opposite tlxe ineen piston B i's'tlie Valve piston E having e sleeve l5 extending' tlnouglx .the end Well oi1 `thel cylinder ifi. lflie Velved piston lies passage ways e e which-'conn inunleete. with 'the exhaust outlet l? dis# posed preferably, in tlleeylindei end beyon d the Valve piston, as shown', end -providetl with e Valve seat e loi L valve -wlneliopens inweidly'ei" towzird tllenmin piston B. Vlll);- *tending tln'o'uglitlie lsleevelll oi thevelved piston, is tile valve stem il having e, seat /fy al'.

its elite?? endA foi ev nine h. Secured. to the 4 Valve `stem ll et e peiietfleeyend the sentii is e step or pinlf', se that :the valve. endit's stein indy lieve/e limited amount of' motion lengtulilinelly of tlie waived sleeve, will' lie el'iviens..y I

Uenne'eted to tli'e outery end ofthe 'valve 'stem li. et l is `lillelever l., pi'veted et fl; em' teted tiene any suitable, seuree ofpower-ez" opening elle valve @fend tlneIfeete-i moving itend the Velved piston E finWerdef--the cylinde* Il; te thereby 'practically enlieust ell tne spent predu'ets o'ieonibustlon, as will lieeineiterinoe fully ep'ieeit* Ae one ineens for operating the lever'j 5 and its een- 7o neeted valve endvelved piston, lly provide e. rod pivote/dto one end oi the lever Les shown, end having opei'iitlve'engegenlent` l with en eee-enti'ie oi" einiges sliown sitL,l seid" l eoeenti'lelieing pi'elei'eloly located on a couny:[5

tei'slmttli, lieving i'edue'ing gearing connes tion L2 L", 'Wif'lltlie crank shaft D, es indi# ofi-'ted tlie' dmv/ings.

lt will tlius'be seen-that ll end the vulve interi/fils inwm'd of Ithe cylinder Afand theconstruction.end ee'tien of #parte with rele tion te the pislone-nd valve are su-elitliet; as the operating ineens lets to n10 Ve'the parte,

:is stated, the Valve Gwill iirstloe epened'Sg and,y the step'ei' pin f1? takes iig-einst the sleeve l1, tlzejflved'piston E-egndits een neeted veli/e (i 'will Alle `moved lengthwise) of the eyllinlei' substantiallyinto Atl'le dotted' line position, :is-shown iny the-drawing, suoli 9o position heme; assumed et'tlie vend oli the expension sliolie of the engine and as the main piston' is fetininne'- 'to exhaust the `spent' gases. Oliwously, vVeiiolls.ineens:might lieen'iplojfed `for elleeting these movements of '95 the Vvalve :ind velved piston` Withintlie .scope el tlie present invention. i

ln order to take Llp-the ythi-ust of the Velved piston din-ing the explosion'stike of the en-rgine, the eylinder is pioirlded. with shoulders loo oi' stops m', against "which complementa] shoulders on the Vlve'd piston abut, iwhen suoli piston is nuts retiree ted or end position,`

es shown ley-full lines in the drawing.

.to 'the' cylinder A is .'thefzinlet 1o5 i@ tli'i'ougliwhich ges-:Veiling eiot'liei'y ex plosive mixture, introduced to the .eyl.nderu havin-g e; Stein oextending throng-l1 Vtheinlet "easing (l, seid Valve being normally held te 11o Cein'leeted This inlet ,O is controlled4 bv e valve o its sont by sp1-jing o2, disposed between the inlet easing U and e nut or Washer 0les smesmlesrnee lee?.

piston end its 6o v f K the VelvedIpiston.v il' may `be moved et stated 8o shown. Suitably disposed or connected to the cylinder A- is 'the usualignition, .plug P, having the ignition points p p, as usual,

, whereby, atappropriate-times, the spark for IOl , nected to the igniting the expiosive mixture is formed'.

'Assuming that the, piston B,. as shown in the drawing, is nearing the end of its ex pansion stroke, thel rod K,-'which' is' con` actuating means therefor, is pushed-to the-lei't-in "the drawinggfar enough to causefthe-leven I to'assume the position indicated the dotted lines, which move- "ment acts@ rst u on 'the valve stemA Hxand i"has compressed t against t the valvedfg'piston is :pushed -forward `to the' f -used gases tojescape position valve `"rei'n'aining' open andpermitting the During -this action of' gwl-iile the main ypist ns the valve and -by the 'time said yvalve is-wide pin? h2 on ithevalve stern eve E', whereupon tons are in thepositionsindicated bydotted lines,J the -inainI pistonifniearly; touchesz 'the valve G and the lever If'is now reversed with ve' G slowly closes, ,IB completes the ex yhaust stroke,= t-he spent gases' being forced the' effect that the lthrough the valve'A opening'so that,' bv the 1 time-the valve G is completely closed, the two pistons are nearly touching each other,

I with' the efl'ect that' the cylinder is practi-y 'cally-exhausted of the s ont gases. f -At the end-'of the exhaust stro 1.; the main piston B-'stairts-foiward on the 'suction stroke-and they valved piston'- E is -pulled' back into its -position, as shown by full lines in the drawing, against the shoulders or stops m m in the cylinder,- 'the valved piston Aremaining .in

\ this position during the compression stroke,

4thus allowing space for' "the compression .of the-fresh charge of explosive mixture, which 1s l taken in through the inlet valveo. The is ton D remains seated against lthe shoul( ers mduring the compression andexpansion stroke of vthe main piston B andthe valve' E I is kept seated during the 'suction stroke; as

-will be apparent.

drawingsand specification I have illustratedanddescribed only one'of the many forms in which my invention may beembodied, and=it will'be obviousto 4those In the'present generally skilled in the art that various changes may be made in the disposition and relative. arrangement of parts and that 'the valved piston may be disposedin other'relations to the e linder withi'iutdepartin i-from I the spiritof t e presentinvention, whi'c cont'einplates the substantial and complete'exin lthe headof the valved -haust of the cylinder by means of a valved piston [through which 'the spent gases or cdmbustion are allowed to escape, said pir'fen being movable to minimize the size ol the exhaust end of the cylinder when the m'aii piston is at the end of its exhaust stroke, or" approachinglit. Having'v us 4described the nature omy invention, what I claim and desire to s cure by Letters Patent of the United -States is: 1.l In avgas engine, the rcoinbinationoi acylinder having an inlet and an` end exhaust or outlet, a main pistonwithin said cylinder, la valved piston disposed inthe cylinder-opposite' the main 4piston andhaving` 4passageways therethrough communicating with ithe 4end exhaust or-outlet, a valve: connected to the valved piston, and means foriirst'open- 4ing'the valve and then lniovihngfit and the y valved piston inward 'of 'the cylinder -toex -haust the burnt gases or-fuel. l

2. 'Ina gas engine, the combination'oi a cylinder, having an inlet and an end exhaust or-outlet,`amain piston-within said cylinder, a valved piston disposedin the cylinder'opgo posite the main piston and' havingpassage- A wa s therethrough communicating withthe -en exhaust' or-outlet, said cylinder having gshouldersor stops for takingup the vthrust-of the valved piston,- a valve connected to the valvedpiston,L and means'for-rst openinor the valve and then movingit andthe valve Y iston inwardof the cylinder to exhaust the urnt gases orfuel. y

3.I In a gas engine, 'Que combinationp a- Icylinder having an' inlet and' an end exhaust -oroutlet, amain piston within said cylinder,- ,a valved-pi-ston disposedin -the cylinderopi posite the 'main piston and having pas eways therethrough'communieatingwith t ee 105 end exhaust or ou'tlet,'said valved pistonihavl ing' a sleeve extended 'throughthe endfof 'the cylinder, a valve seated in said valved' iston and having a ste1n=-extended Lthrou'g `said sleeve, 4and5 means aotingon the valve-stem to openthe valvead 5tlierea'ltver move Fthe i valve and valvedpiston inward'pr the cylin- Y ider to exhaust the spentgases. A f 4.' In a gas engine,f'the cimibinationibifaf` cylinder having or-outlet, amain iston `within said' cylinder, a valved piston isposed'in the cylindepopposite the main Vpiston andlhavingpass e- -wa s'therethrough communicatingiwithit e'A en `exhaust or outlet, said v'alvedpistonhavV inga sleeve extended through *the end/of 'the -cylinder,.a valveseated-in saidifv'alved iston and-having a stem extended-'throng --said sleevaga -pin -or 'stop'pn -said' valve. stem, a s ring disposed between the pin or lsito and e sleeve vof the valvedpifston tomaintain the-valve seated,-andmeans actin -on' 4the l valve stem'to-open the valve and t ereaiter move` the valve and va'ived-piston1inward-pf 1 theY cylinder to exhaust the' spent gases. 13o

roo

l IO i,

aniinlet' and anend exhaust 115 y piston Within said cylinder, a valved piston disposed inthe oylmder opposite the main piston and having passageways therethrou h communicating With the said outlet, sald 4valved piston having a sleeve extended through the end of the cylinder, a valve seated in said piston andhaving a stem extended through said sleeve, a seat formed in the end of said sleeve, a spring in said seat, a

pin or vstop on the valve stem and means for positively moving `the valve inward of the l cylinder and causing the pin or stop to con-` tact with the sleeve to thereafter move thevalve and piston together.

In testimony whereof I aflx'my signature in presence oftwo witnesses.

JOHN W. LIPPINCOTT. Witnesses:

JAMES W. HooPER, P. V. FERGUSON. 

